Package org.eclipse.rdf4j.sail.nativerdf.datastore

Class HashFile

java.lang.Object

org.eclipse.rdf4j.sail.nativerdf.datastore.HashFile

All Implemented Interfaces:

Closeable, AutoCloseable

public class HashFile
extends Object
implements Closeable

Class supplying access to a hash file.

Author:

Arjohn Kampman

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
class	HashFile.IDIterator

Constructor Summary

Constructors

Constructor	Description
HashFile(File file)
HashFile(File file, boolean forceSync)
HashFile(File file, boolean forceSync, int initialSize)

Method Summary

Modifier and Type	Method	Description
void	clear()
void	close()
File	getFile()
HashFile.IDIterator	getIDIterator(int hash)	Gets an iterator that iterates over the IDs with hash codes that match the specified hash code.
int	getItemCount()
void	storeID(int hash, int id)	Stores ID under the specified hash code in this hash file.
void	sync()	Syncs any unstored data to the hash file.
void	sync(boolean force)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

HashFile

public HashFile(File file)
         throws IOException

Throws:

IOException

HashFile

public HashFile(File file,
                boolean forceSync)
         throws IOException

Throws:

IOException

HashFile

public HashFile(File file,
                boolean forceSync,
                int initialSize)
         throws IOException

Throws:

IOException

Method Detail

getFile

public File getFile()

getItemCount

public int getItemCount()

getIDIterator

public HashFile.IDIterator getIDIterator(int hash)
                                  throws IOException

Gets an iterator that iterates over the IDs with hash codes that match the specified hash code.

Throws:

IOException

storeID

public void storeID(int hash,
                    int id)
             throws IOException

Stores ID under the specified hash code in this hash file.

Throws:

IOException

clear

public void clear()
           throws IOException

Throws:

IOException

sync

public void sync()
          throws IOException

Syncs any unstored data to the hash file.

Throws:

IOException

sync

public void sync(boolean force)
          throws IOException

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Throws:

IOException